#5
# 5
# 6
# 3
# 4
# 5
# 6
# 7
# 8
# 9
# 10
import keyword

if True:
    print('hello world')
    print('hello world2')
else:
    print('hello world')
print(11111)
print(keyword.kwlist)
num = 10
print(type(num))
num = "hello world"
print(type(num))
print ("请输出一个年份")
year = input()
print("您输入的数字是：",year)
str1 = 'h'
str2 = 'l'
str3 = 's'
print(str1,str2,str3,sep='-',end='\t')
print(8888888)
print(3-2.6) #0.39999999999
d1 = Decimal('2.6')
print(3-d1) #0.4
print(2/8)
print("*"*20)



num5 = 7
if 90 < num5 < 100:
    print("优秀")
elif 80 < num5 < 90:
    print("良好")
elif 70 < num5 < 80:
    print("及格")
else:
    print("不及格")